@article{oai:kyukyo.repo.nii.ac.jp:00000158,
 author = {長谷川, 伸 and HASEGAWA, Shin},
 issue = {2},
 journal = {九州共立大学研究紀要, Study journal of Kyushu Kyoritsu University},
 month = {Mar},
 note = {The purpose of this study was to examine the difference of muscle thickness of trunk between the
pitching arm side and the non-pitching arm side in a baseball pitcher.　Twenty college baseball pitchers
( pitchers group) and 20 male college students (control group) participated in this study. Twelve muscle
thickness in the chest, abdomen and back were measured by using ultrasonic diagnostic apparatus
with 8 MHz probe. Muscle thickness were measured in the chest (pectoralis major, pectoralis minor), in
the abdomen (rectus abdominis, external oblique, internal oblique, transversus abdominis, quadratus
lumborum ), and in the back (upper trapezius, lower trapezius, rhomboid major, latissims dorsi, erector
spinae). In the control group, there was no significant difference of muscle thickness between the
dominant arm side and the non-dominant arm side in all the muscles of the chest, abdomen, and back.
In pitchers group, pectoralis major and pectoralis minor muscle in the chest showed significantly larger
muscle thickness on the pitching arm side, and lower trapezius and latissimus dorsi muscles in the back
showed significantly larger muscle thickness on the pitching arm side. On the other hand, the external
oblique and the internal oblique muscle in the abdomen showed significantly larger muscle thickness on
the non -pitching arm side. These results indicate that selective muscle hypertrophy on chest and back
was observed in the pitching arm side, and that on abdomen was observed in the non-pitching arm side
in baseball pitchers.},
 pages = {43--49},
 title = {野球投手の体幹筋における形態的特性},
 volume = {7},
 year = {2017},
 yomi = {ハセガワ, シン}
}